Lock washer assembly



FIG. 1 is a top plan view of a lock washer assembly, showing my new design;

FIG. 2 is a bottom plan view thereof;

FIG. 3 is a side elevational view thereof; and

FIG. 4 is a cross sectional view taken in the direction of the arrows of line 4--4 of FIG. 1. 

The ornamental design for a lock washer assembly, as shown and described. 